[meteorite-list] Fw: term definitions and usage

From: Richard Montgomery <rickmont_at_meteoritecentral.com>
Date: Sun, 24 Jul 2011 18:50:51 -0700
Message-ID: <49A6B71073384ADC9C63673EF8131627_at_bosoheadPC>

Thanks Chris, 'twas as I read....
-Richard


----- Original Message -----
From: "Chris Peterson" <clp at alumni.caltech.edu>
To: <meteorite-list at meteoritecentral.com>
Sent: Sunday, July 24, 2011 6:37 PM
Subject: Re: [meteorite-list] Fw: term definitions and usage


> Ga is billions (gigayear) of years. Ma is millions (megayear) of years.
> "a" is the most commonly used symbol for year (from annus) in scientific
> publications.
>
> Chris
>
> *******************************
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
> On 7/24/2011 7:26 PM, Richard Montgomery wrote:
>>
>> Hello List,
>>
>> Another neophyte question (I can use some clarification): when / how are
>> the time-measurements (relatively speaking) designations "Ga" and Ma"
>> used, and their respective differences?
>>
>> (I believe I know the difference through context, but why go through so
>> many papers and texts with the question-mark over my head?)
>>
>> Sincerely,
>> Richard Montgomery
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Received on Sun 24 Jul 2011 09:50:51 PM PDT